One species of these animals often has its eyes infected by the copepod Ommatokoita elongata, (10[1])which might attract prey through bioluminescence. That species of these animals contains toxic amounts of trimethylamine N-oxide and urea, which allows it to live at great depths. (10[1])This is the largest group of animals whose intestines contain a spiral valve to increase surface area and a specialized liver full of squalene to maintain buoyancy. The cephalofoil shape of one of these animals’ heads is thought to enhance electroreception. (10[1])A slow swimming “sleeper” one of these animals is named after Greenland. For 10 points, name these predatory cartilaginous fish that have great white and hammerhead varieties. ■END■